Tubular gas water-heater.



No. 639,4l7. .Patented Dec. I9, |899. J.` MANDER.

TuBuLAR lGAS WATER HEATER. (Application med June 16, 1399.1

(No Model.)

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PATENT Finca.

JOHN MANDER, OF PHILADELPHIA, PENNSYLVANIA.

SPECIFICATION forming part of Letters Patent No. 639,417, dated December19: 1899.

Application tiled June 16, 1899. Serial No. 720,743. (No model.)

To all whom t may concern.-

Be it known that I, JOHN MANDER, a citizen of the United States,residing in the city and county of Philadelphia, State of Penn-Sylvania, have invented a new and usefullmprovement in Tubular GasWater-Heaters,

l which improvement is fully set forth in the following specificationand accompanying drawings.

My invention consists of an improved construction of a tubular gaswater-heater to be used in connection with the water-heater of a stoveor range, as will be hereinafter more fully set forth, and particularlypointed out in the claim.

Figure l represents a vertical sectional view of a tubular gaswater-heater embodying my invention. Fig. 2 represents a verticalsectional view of a heater similar to that shown in Fig. l, but suppliedwith a plurality of fines or passages for the heating medium, andshowing also a boiler and the water-back t0 which the heater isapplicable. Fig. 3 represents a section on line nc ai, Fig. 2.

Similar letters of reference indicate corresponding parts in theligures.

Referring to the drawings, in Fig. l, A designates a heater, the sameconsisting of a base portion B, which is provided with the lower convexor dished plate or tube-sheet C, against which the gas-flames from theheating deviceD are adapted to impinge, said heater being located sothat all the heat units impinge upon the under surface of said convexplate and are conducted upwardly through the flue D to the exit, theoutlet of said i'lue being controlled by means of a damper E.

F designates the outer wall or casing of the heater, the same beingpreferably of annular contour to correspond with the contour of the flueD and having connected to its lower portion the base B, which latter isdome-shaped and provided with the pipe GX.

I-I designates a pipe leading from the casing F to the water-back H ofthe stove or range, while the upper portion of the casing F is providedwith a connection J, which leads to the boiler K.

In the construction seen in Fig. 2 I have shown the gas water-heater asprovided with a plurality of upwardly-extending nues,

` proximity is very hot.

which are here designated as L, said flues leading upwardly from theconvex plate C, which corresponds to the similarly-located plate seen inFig. i and adapted to receive heat from the gas-burner D, tothe upperplate M, above which is the flue N, which contains the damper E. Thenumber of iiues L may, of course, be increased or diminished accordingto requirements and are inclosed by a casing F, substantially similar tothe casing seen in Fig. 1. The lower portion lB of the heater seen inFig. 2 is substantially the same as that of the heater seen in Fig. 1,and the pipe G and the outlet-pipes J and H for making the necessaryconnections to the boiler K and the water-back of the range are allsubstantially the same as seen in Fig. l.

In practice I prefer to mount the heater seen in Fig. 2 upon a frame orlegs M ,whereby the heater is effectively supported.

It will be seen that the convex plate C is heated to a high degree bythe gas-dames of the burner D impinging directly thereupon, the water inits heated condition passing upwardly into the boiler K, while bythenproper manipulation of the damper D the heat can be retained withinthe flue or iiues D or L as long as may be desired.

The tubular gas water-heater can be used alone, as seen in Fig. l. Thepipe G serves as the inlet-pipe, in which case the feed-water isdischarged direct on the highly-heated dished plate C, it beingunderstood that the pipe Hin Fig. l is not employed while the heatedwater from the heater iiows outwardly through the pipe J. When theheater is used in connection with the water-heater of' a stove, the pipeH serves as the inlet, as shown in Fig. 2, and the pipe GX of Fig. l orpipe G of Fig. 2 may then rserve as a blow-off ora waterout'let from thewater-chamber formed by the casing F. In the lattercase the water isdrawn from the heater in a highly-heated condition direct from theconvex surface of the plate C, and since the iiames from the burnerimpinge directly against said plate C it is obvious that the water drawndirectly from such close The heater can be used equally well with anupright boiler as with the range shown, or it can be used alone, ifdesired.

IOO

In practice I provide an inletpipe l? for the purpose of conductingwater to the boiler K,

the water passing therefrom downwardly through the pipe Q into thewater-back I-I and passing thence through the pipe H into the heater andHowing from the latter through the pipe J into the boiler, the heatedwater flowing therefrom through the pipe R to the point of supply.

A heater constructed in accordance with my invention can be quickly setup without necessitating the employment of skilled labor and when inposition will require but little attention.

It will further be apparent that changes may be made by those skilled int-he art which will come Within the scope of my invention, and I do not,therefore, desire to be limited in every instance to the exactconstruction I have herein shown and described.

Having thus described my invention, what claim as new, and desire tosecure by Letters' Patent, is-

The combination with a water-heating device of a stove or range, anupper boiler, and a pipe connecting the lower portion of said boilerwith the lower portion of said heating device, of a gas water-heaterconsisting of a casing having an enlarged base portion and an upwardly-extendin g flu e, said base portion having a convex lower plate,a burner situated below said plate whereby the dames therefrom ilnpingedirectly upon said plate, a

pipe connecting the upper end of said casing with the upper portion ofthe boiler, and an outlet-pipe leading from the side 0f the base portionclose to said plate, whereby the Water is drawn off in a highly-heatedcondition.

JOHN MANDER. Witnesses:

WM. OANER WIEDERSHEIM, E. HAYWARD FAIRBANKS.

